package cn.enilu.flash.api.utils;

import java.util.Random;

public class Nonce {

    //length用户要求产生字符串的长度
 public static String getRandomString(int length){
    String str="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
    Random random=new Random();
    StringBuffer sb=new StringBuffer();
    for(int i=0;i<length;i++){
      int number=random.nextInt(62);
      sb.append(str.charAt(number));
    }
    return sb.toString();
}
    
}
